Some New FOCers (84V VESC 6 based controllers)

You should look into this:

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I would love to see a VESC based on something like that.

The Axiom is out of my price range mostly because it is overkill for my ~25 kw needs.

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Better link :wink:

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You can get a 24kw AWD build with a regular 12S VESC.

Yeah but I need to do it on 28s to get the correct RPM out of the single motor. It is for an airplane not a skateboard.

I have a Sevcon but I would much prefer the programming interface of the VESC.

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@Helno How much current you need at 28s?

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Yeah thatā€™s big boy power. Folks have already linked the Axiom so Iā€™ll let you dive into that one. SEVCON is something I hope to one day compete with but that will be a long journey. I know people hate SEVCONā€™s programming style and setup.

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250-350 should do it.

Higher voltage than 28s would also be nice (150 vdc max).

The axiom costs twice as much as the airframe is worth.

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Go buy a used Toyota Prius inverter and a control board from evbmw.com then you have a cheap setup capable of up to 500v, 350A and fairly easily replaceable. How big is your plane

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Very small. Like 600lbs gross weight.

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Well if you have enough room for a small microwave you have room for the Prius inverter. Should be able to find them at your local wreckers, can get them as low as $100 if you offer cash

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lol

I remember seeing a post on endless sphere where someone was asking about how to program a SEVCON for an EE senior project and the consensus was the person had a high probability of failing their project. A user friendly box that can compete will be interesting to a lot of users. Iā€™ll stay tuned and try to support your work as possible.

Helno you might consider a device like the inverter from a Honda Insight. They are inexpensive, and much smaller than a microwave. You would need to work with the openinverter group to make it work with a control board.

https://www.ebay.com/itm/2010-2014-Honda-Insight-Hybrid-IMA-Inverter-Control-Computer-Module-OEM/383115093875?epid=1023867681&hash=item5933706773:g:FiMAAOSwKvddXZgu

Looks like this guy is also making a big VESC, at least he was in July.

https://vesc-project.com/node/1875

Thanks kalebudlow, thatā€™s what Iā€™ve been looking for. Looks like Iā€™ve got a lot of reading to do. I was going to use the Honda unit, but dual motor might be really cool and there are so many Priuses being parted out around me.

Iā€™m off to the openinverter forums. Thanks again everyone, keep it up.

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Him and I have actually been collaborating on something high power and compact for a while. Itā€™s been a difficult project but itā€™s finally starting to show some success as a prototype. But more about that on a different thread at another time

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Spill the beans. Airplane? Car?

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Any BLDC application just like any other VESC based controller.

But letā€™s get the thread back on track. I could talk about high power stuff all day

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So update on beta testing.

The onwheelers have been successful. Theyā€™ve found what could be the right tuning steps for a very smooth and powerful experience for the onewheel and similar rides.

Nothing from esk8 testers yet but one is getting close. Based on my other models, this should be the easiest and most straight forward application when it comes to detection and setup.

Ebikers are pending but I know it works with that application based on my own testing.

Testing is going slower than I would like but itā€™s been effective so far.

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nobody with a V1 tho :confounded:

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V1? Fill me in. Maybe I can fix that

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sorry, meant V1 onewheel hub motor not any v1 FOCer.

It is much different than the bldc motors we are accustomed to and it seems the VESC hardware/firmware canā€™t detect and run it.

Let me pull up the infomation I found on it.

ā€œOnewheel, which will be commercially available in fall of 2014, uses ETMā€™s patented transverse-flux motor (TFM) technologyā€

ā€œETM motors are distinctly different than conventional motors in that TFM uses simple toroidal coils with the stator ā€˜wrappedā€™ around the coil while conventional motors require copper coils that encircle individual stator teeth. By using a single toroidal coil per phase, ETM motors enable high pole counts with very low winding resistance. This results in motors that produce unusually high continuous torque per size and weight, while matching or exceeding industry leading peak torque output.ā€


it kinda almost works but trying to drive it make it vibrate violently

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405uH? extremely high when compared to most applications. Tell me more via PM. Iā€™d like to explore this.

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